Are There Tax Effects in the Relative Pricing of U.S. Government Bonds?

We investigate the impact of the Tax Reform Act of 1986 on the relative pricing of U.S. Treasury bonds. We obtain positive statistically and economically significant estimates for the implicit tax rates of a “representative” investor in the late 1970s and early 1980s. After the 1986 Tax Reform, the point estimates for the tax rate are close to zero. Tests for a regime shift associated with the 1986 Tax Reform support the hypothesis that this event largely eliminated tax effects from the term structure. We discuss both institutional and statutory explanations for this change.     

A STATISTICAL THEORY OF EQUILIBRIUM IN GAMES*

This paper describes a statistical model of equiliobrium behaviour in games, which we call Quantal Response Equilibrium (QRE). The key feature of the equilibrium is that individuals do not always play responses to the strategies of their opponents, but play better strategies with higher probability than worse strategies. we illustrate several different applications of this approach, and establish a number of theoretical properties of this equilibrium concept. We also demonstrate an equililance between this equilibrium notion and Bayesian games derived from games of complete information with perturbed payoffs     

Positively Weighted Portfolios on the Minimum-Variance Frontier

Duality theory is employed to provide necessary and sufficient conditions for portfolios on the minimum-variance frontier to have positive investment proportions in all assets. These conditions involve the feasibility of portfolios that have non-negative correlation with all assets and positive correlation with at least one. Using these results, several “qualitative” results concerning the signs of investment proportions in efficient portfolios are proved. It is argued that the conditions that ensure all-positive weights in efficient portfolios are intuitively compelling and are not unique to the CAPM. With large numbers of assets, however, the signs of weights in minimum-variance portfolios can be very sensitive to slight departures from these conditions due to, for example, sampling error.     

REGULATORY STRUCTURE, REGULATORY FAILURE, AND THE S& L DEBACLE

Widespread S & L failures during the 1980s required the federal government to spend over 100 billion dollars bailing out the deposit insurance fund. This paper interprets the S & L debacle as a regulatory failure. Review of the S & L debacle suggests that regulators failed to manage the deposit insurance system efficiently. But the regulatory agencies' structure appears to have played a secondary role in contributing to regulatory failure. Faced with the same incentives, objectives, and resources, regulators probably would have behaved similarly regardless of the regulatory structure.     

The Persistence and Pricing of the Cash Component of Earnings

Prior research shows that the cash component of earnings is more persistent than the accrual component. We decompose the cash component into: (1) the change in the cash balance, (2) issuances/distributions to debt, and (3) issuances/distributions to equity. We find that the higher persistence of the cash component is entirely due to the subcomponent related to equity. The other subcomponents have persistence levels almost identical to accruals. We investigate whether investors understand the implications of the differential persistence of the three subcomponents. Our results suggest that investors correctly price debt and equity issuances/distributions but misprice the change in the cash balance in a similar manner to accruals. Our tests enable us to empirically distinguish the “accrual” and “external financing” anomalies with results implying that the accrual anomaly subsumes the external financing anomaly. Our results also suggest that naive fixation on earnings is unlikely to be a complete explanation for the accrual anomaly. Our findings are more consistent with investors misunderstanding diminishing returns to new investments.